Can I connect my Instagram account?

Unfortunately, Instagram's terms & conditions do not allow most apps to post directly to them. As a result, we won't be able to integrate with them unless they change their policies.

However, we do have an integration with Buffer and they've created a workaround to post on Instagram where you can schedule reminders ( here's how it works ).
So if you're looking to post your Snappa images directly to Instagram, the easiest way would be to sign up for a free Buffer account (they also have premium plans) and then you can easily add all your Snappa images to your Instagram queue in Buffer.